Machine fob bending ob pressing sheet metal



T. BRIEGEL.

MACHINE FOR BENDING 0R PRESSING SHEET METAL.

APPLICATION FILED NOV. l6. I915.

l 1 9 3,75 9 Patented Aug. 8, 1916.

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lUNllTED STATE PATENT @FFTCE.

THEODORE BRIEGEL, OF ROCK ISLAND, ILLINOIS, ASSIGNOR T0 HARRY E. \VINTERS, 0F DAVENPORT, IOWA.

MIACHINE FOB, BENDING 0R PRESSING SHEET IJIETAL.

Application filed November 16, 1915.

To all whom it may concern: V

Be it known thatl, Trinononn BRIEGEL, a citizen of the United States, residing at Rock Island, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Machines for Bending or Pressing Sheet Metal, of which the following is a specification.

My invention relates to a machine for pressing or bending sheet metal into a shape to form a sign board, adapted for holding cards, tickets or the like, having suitable characters thereon.

An important object of the invention is to provide a. machine of the above mentioned character, so constructed that the primary and secondary steps in the process of pressing or bending the sheet metal, are approximately simultaneously performed.

A further object of the invention is to provide a machine of the above mentioned character, which will operate in a continuous and expeditious manner.

A further object of the invention is to provide a machine of the above mentioned character, which is simple in construction, inixpensive to manufacture, strong and dura 1e.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a side elevation of a machine embodying the invention, Fig. 2 is a transverse sectional view through the machine, with the dies elevated, and, Fig. 3 is a similar view with the dies lowered.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a relatively stationary preferably hori- Zontal anvil provided in its top with a lon-- gitudinal recess or groove 6, having a vertical side wall 7, a horizontal bottom 8, and an inclined side wall 9, as shown.

The anvil 5 is provided with a vertical longitudinal opening. 10, communicating with the recess or groove 6 and leading into an opening 11. Mounted to move vertically within the recess 6 is a vertically movable anvil-section 12, having a flat vertical shank 13, slidably mounted within the opening 10.

Specification of Letters Patent.

Serial No. 61,891.

This flat shank is provided upon its lower edge with depending pins 14, receiving coil springs 15, serving to force the anvil-section 12 upwardly, to assume a position above the top of the anvil, as clearly indicated in Fi 2. The anvil-section 12 is provided in its top with a groove or recess 16, formed curved in cross-section. The anvil-section 12 has a vertical side wall 12 forming with the vertical wall 7 a vertical chamber 7, and an inclined side wall 13, forming with the wall 9, an inclined chamber 9, as shown.

The numeral 17 designates a horizontal die element, provided with a depending rib or extension 18 extending longitudinally thereof and formed curved in cross-section, to enter the groove 16 and a depending rib or extension 19 to operate within the inclined chamber 9', as shown. The die element 17 is rigidly secured to bolts or guide rods 20, vertically movable within openings 21 formed in a vertically movable carriage 22. Compressible coil springs 23 surround the bolts 20 and oppose the upward movement of the die element 17 but particular attention is called to the fact that the springs 23 are much slighter than the springs 15 whereby the springs23 will be compressed by the springs 15. The die element 17 is thus vertically movable with relation to the carriage 22, which may be raised and lowered by any suitable means.

The carriage 22 is provided near one edge with a vertical groove 2st, receiving a vertically arranged die element 25, disposed adjacent one edge of the die element 17. The die element 2 1 is stationary with respect to the carriage 22 and is clamped within the opening 21 by bolts 26.

The operation of the apparatus is as follows: When the carriage 22 is ele ated, the die element 17 is spacer. a substantial distance from the lower end of the carriage. The section of sheet metal 27 or the like is placed upon the movable anvil-section 12, and when the carriage descends, the die element 17, first remaining stationary with relation to the carriage 22, the rib 18 contacts with the sheet metal 27 and forces it into the groove 16, thus forming the longitudinal groove 28 in the sheet metal. he further downward movement of the die element 17 is opposed by the springs 15 and the carriage 22 descends with respect to this die element until it contacts with the carriage, as shown in Fig. 3. l/Vhen this occurs the die element 17 descends to the lowermost position, as shown in Fig. 8, the die element 25 then projecting downwardly beyond the die element 17 for a substantial distance. This die element forces the material of the sheet metal. 27 into the openings 7, as illustrated in Fig. 3, thus forming a primary vertical loop 29. When the carriage 25 is again moved to the upper position, as shown. in Fig. 2, the sheet metal 27 is longitudinally shifted so that the primarily vertical loop 29 is disposed upon the right side of the anvil-section 12, in proximity to the opening or recess 9, tov enter'it. The rib or extension 19 is arranged to enter the loop 29and when die 17. descends, the vertical loop 29 is forced into the opening 9, having the inclined walls, whereby'this normally verticallbop is bent to an angular position, as clearly indicated in Fig; 3. During this lateral bending of the primarily vertical loop, the new vertical loop is being formed, as above described.

It is to be understoo'd'that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement" of parts may be resorted to without departing from the spirit of theinvention or the scope of the subj oined' claims;

Having thus described the invention, I claim:

' 1'. In a machine of the character described, a stationary anvil having a recess provided with a substantially vertical side wall and an inclined side wall, a vertically movable anvil section arranged within the recess and having a substantially vertical side wall disposed near the substantially vertical side wall of the recess and an inclined'side wall disposed near the inclined side wall of the recess and permanently spaced therefrom for providing an inclined chamber, a vertically movable carriage arranged near the anvil, a

die element connected with the carriage and vertically movable toward and away from it and with it toward and away from the anvil, a second die element connected with the carriage for movement therewith and disposed near the first named. die element, yielding means to oppose the movement of the first named die element in one direction, and yielding means to oppose the movement of the anvil section in one direction and adapted to overcome the first named yielding means.

2. In a machine of the character described, a stationary anvil having a recess provided .with a substantially vertical side wall and an inclined side wall, a vertically movable anvil section mounted within the recess and having a substantially vertical sidewall disposed near and spaced from thecsubstantially vertical side wall of the recess and an inclined side wall disposed near the inclined side wall of said recess and permanently spaced therefrom for providing an inclined chamber, a vertically movable carriage disposed above the anvil, a die element connected with the carriage and vertically movable, toward and away from it and with the carriage toward and away from the anvil and having a ribadapted to enter the inclined chamber between the said inclined walls, a. second die element connected with the carriage for movement therewith and adapted to pass between the said substantially vertical walls, yielding'means to oppose the movement of the first named die element in one direction, and yielding means to'oppose the movement of theanvil section in one direction andadapted to overcome the first named yielding means;

3. In a machine of't'he' character described, a stationaryanvil having a recess providedwith a substantially vertical side wall and an inclined side wall, a vertically. movable anvil section arranged. within the recess and having a substantially vertical'side wall disposed near and spaced from. the substantially vertical sidewall ofthe'recess and an inclined side wall disposed near the inclined side wall of said recess and permanently spaced therefrom to provide an inclined. chamber and provided on its top with a groove, a vertically movable carriage'disposed near and above the anvil, a die element connected with the'carriage and movable toward and away from it and with. it

toward and away from the-anvil, said die element having a rib to enter the groove in the anvil section and a second rib to pass into the inclined" chamber between the in.- cline'd side walls, a second die element rigidlysecured'to the carriage and adapted topass between the said vertical side walls, yielding means to oppose the movement of the first named die element in one'direction, and yielding means to oppose the movement of the anvil section in one direction and adapted to overcome the first named yielding means.

In testimony whereof'I aflix my signature in presence of two witnesses.

THEODORE BRIEGEL. Witnesses:

C. F. SHANNON, V. L. FRYKMAN:

Copies of this patent may be obtainedfor five cents each; 'By addressing-theCommissioner of Patents; Washington, D. 0. 

